Chromatrope.



- n PATENTED JUNEVQVlQOS. G. WELLS.

GHROMATROPB.

urmonlon FILED un; 24, 1903.

no Mnm..

PATENTED JUNE 9, 1903;

. No. 730,501. z

- v G. WELLS.

CHROMATROPE.

APPLIOATION FILED 11213. .24, 1903. no Holm.. V 2 msnm-@HEBT a.

n UNITED STATES- Patented June 9, 1903.

PATENT OFFICE.

GEORGE WELLS,` OF MONTREAL, CANADA, ASSIGNOR OF ONE-HALF TO JOSEPH THOMAS BOLT, OF MONTREAL, CANADA.

.C1-l RoMATR'oPE.

SPECIFICATION forming part of Letters Patent N o. 730,501, dated June 9, 1903. Application led February 24,1903. Serial Nm 144.859. (No model.)

T all whom it may concern:

city of Montreal, in the district of Montreal and Province of Quebec, Canada, have invented certain new and useful Improvements in Automatic Electric Chromatropes; and I do hereby declare that the following is a full7 clear, and exact description of the saine.

This invention relates particularly to chromatropes of the type disclosed in Letters Patent No: 693,317, granted to me on February ll, 1902; and it has for its object to render the views more clear and enableany view to be held for any desired time or to be shown with uniformity.

A further object of the invention is to enable the views to be shown at any desired angle and to cause an indicator to indicate the portion of a view whentopped which is adjacent to any predetermined point. Y

The invention may be said, briefly, to consist in providing means to act in conjunction with what is known as the retardin g means of the cromatropes, to which this invention has particular reference, saidmeans being adapted to raise the design-disk to any desired position above and either partially or completely out of contact with the designdisk support and permanently support the disk in such position.

A second feature of this invention consists in providing an indicator and an operative connection between said indicator and a moving part of the chromatrope,whereby the point upon the view-disk when the latter is brought to a standstill adjacent to a predetermined point independent of the view-disk will be indicated.

A third feature consists of a tilting frame for cc rrying the view and design disks in order to enable said disks to be tilted to face in any desired direction.

A fourth feature consists of a signal device operatively connected toan operated part of the chromatrope and adapted to announce the appearance of each new view when a viewdisk adapted to be varied in speed is used; and the invention further consists in certain specic featuresof construction which, together with the foregoing, will be hereinaf- 'ter clearly set forth, and pointed out in the Be it known that I, GEORGE VELLS, of the,V

claims.

For full comprehension, however, of my invention reference 1n ust be had to the accompanyin g drawings,form ing a part of this speciiication, in which similar reference characters indicate the same parts, and wherein- Figure l is a side eleva-tion of my improved chromatrope with the disk-carrying frame tilted. Y Fig. 2 is a plan view thereof with the view and design disks removed; and Fig. 3 is a side elevation with the disk-carrying frame 'in a vertical plane, the view being taken at right angles to Fig. l.

The spindle h, with collars c and d, respectively, for supporting a disk e for bearing the design, and the view-disk f, together with the means for driving said spindle, the retardingring g, the spindle 7L, cog-wheel fi, cam j thereon, the bracket-arm 7c', yielding pin Z, with eccentric m on one end thereof adapted to be acted upon by the camj, `and the .worm o and worm-wheel p, with projections q thereon for intermittently rotating said cogwheel, are the same as disclosed in my said Letters Patent and will therefore not be described in detail herein.

It is a well-known fact that some chromatropic views require a higher speed than others and that in the devices heretofore known it has not been possible to adjust the speed and maintain same uniformly after adjustment for any desired length of time. In order to obviate this defect, I secure a dog r upon the spindle h, nearthe lower end thereof, and form the carrying-frame S with a downwardly-projecting lug t in line with said spindie. An eccentric u, pivoted, as at o, to said downwardly-projecting lug, is borne upon by said dog -r and has a radially-'projecting arm 2, whereby it may be moved to dierent positions and the retarding-ring g through its spindle raised or lowered relatively to the upper surface ot' the collare for supporting the design-disk, thusv reducing the' friction between said ring and disk to anyrequired degree, and thereby slowing down the disk or stopping` it entirely. In either case the disk is held in any position to which it may be adjusted and the speed thereof maintained permanently as long as desired at a rate necessary to produce the particular view in sharp lines.

One of the particular uses to which this device may be put is the disclosure of advertisements, and to enable this to be done and at the same time particularize certain of the advertisements I furnish the cam j with a laterally-projecting pin and secure a bracketarm 11 to theside of the tilting frame s, to be presently described. A stub-spindle 13, projecting laterally from the free end of this bracket-arm, has a rigid lever-arm fulcrumed thereon and an expansile coiled spring 15 encircling the outer end thereof, with one end connected thereto, as at 16, and its other end bent, as at 17, to bear upwardly upon the under side of said lever-arm and maintain its inner end 18 yieldingly in a position to be depressed by the pin 10, While the outer end 19 of said lever has a resilient arm 20, pivotally connected at its lower end thereto by a screw having a butterfly-head 21, and its upper end is in the form of an indicator-hand 22. The resilient arm will be intermittently moved to a position to bear upon the periphery of and arrest the design-disk, and simultaneously the indicator will be caused to overlap the periphery thereof and indicate the portion of the disk in close proximity to the resilient arm, which portion may be one of a series of divisions of the disk each bearing a separate advertisement or other suitable marking capable of distinguishing it from the other divisions. The pivotal connection of the resilient arm to the lever-arm 1S 19 allows of the adjustment thereof to and from a position to engage the periphery of the disk in order that it may be moved out of the way when not required as to accommodate disks of different diameter. At times while the device as disclosed in my said Letters Patent is operating the disks frequently attain too great a speed. This can be counte'racted in the present embodiment of my invention by adj Listing' the eccentric u.

In order to enable the views to be presented at any desired angle Within a reasonable range, I mount the design and view disks, and preferably their completedriving-gear, in a tilting frame s, before mentioned, of U form, pivoted, as at 24, at the ends of its legs between the ends of the legs 26 of a supportingframe 27, also of U form.

The blades of the view-disk are bent into the form of vanes, thus serving the double purpose of a view-disk and a fan.

As is set forth in my said Letters Patent each rise upon cam j in turn raises the retarding-disk and causes the view presented by the design-disk to change. When advertisements are being shown and frequently at other times, it is desirable that each change of view be announced. To this end I mount a stationary contact 30 upon frame s beneath the end 18 of the lever-arm and secure a resilient contact-strip 32 at one end tothe said lever end 18. These contacts have connected thereto branch leads 33 from the main leads 34 of an electric circuit which furnishes the power to drive the machine.

j It has frequently occurred that the cogwheel v.' has continued rotating after the actuating-pins upon the Worin-wheel have become disengaged from the teeth thereof, owing to the momentum imparted thereto by said pins, and the effectiveness of the friction for retarding it consequently reduced. To obviate this defect, I have mounted the cog rotatably upon a pin or small spindle 40, inserted in a boring in the tilting frame, where it is retained against displacement by a set-screw 49 and has a cotterpinlll inits end,betweenwhich and the cam integral with the cog an expansile spring 42 bears. To adjust the tension of this spring, the set-screw is loosened and the pin or spindle is moved into or out of the frame and then again secured by tightening the set-screw, While this pin or spindle serves also as a means for steadying the bracket for supporting the indicator. The worm-Wheel is mounted upon an eccentricpin 50 in order to render it more easily and accurately adj listed with relation to its actuating-Worin.

Vhat I claim is as follows- 1. In achromatrope,the combination witha desi gn-disk support, a view-.disk support, and means for rotating said disks, of means for adjusting the speed of rotation of the designdisk and means for maintaining with uniformity the speed to which said design-disk is adjusted.

2. In a chromatrope consisting of a designdisk support, a view-disk support, means for rotating said disks, and a retarding device adapted to be caused to bear upon the designdisk, of means for adjusting said retarding device to varying positions relatively to said design-disk support for the purpose of adjusting the speed of rotation of said design-disk and permanently maintaining with uniformity the speed to which it is adjusted.

3. In a chromatrope consisting of a designdisk support, aview-disk support, a spindle mounted slidably parallel to the axial line of and adjacent to said design-disk, an annulus concentric of the support for said design-disk, means connecting said Aannulus to one end of said slidable spindle, of a dog rigidly secured to and projecting laterally from said spindle, an eXpansile helical spring yieldingly retaining said annulus below the surface of said design-disk support, and an eccentric rotatably mounted beneath and in a position to be borne upon by said dog, for the purpose set forth.

4. In a chromatrope, comprising a viewdisk support and a design-disk support, means for rotating said supports, and means for retarding the speed of the design-disk, of an indicator adapted to indicate a particular portion IOO IIO

determined point'upon each variation of they views.

(5. In a chromatrope,the combination with a view-disk support, a design-disk support, means for rotating said supports, a retarding device comprising a rotating part, of a projection upon said rotating part, a suitablysupported lever fulcrumed between its ends and having one end projecting beneath said projection, aspring causing said end of the lever to yieldingly maintain a position to be borne upon by said projection, a resilient arm projecting from the opposite end of said lever and adapted to bear upon the periphery of the design-disk when said leveris depressed by said projection.

7. In a chromatrope,ihe combination with a view-disk support, a designdisk support, means for rotating said supports, a retarding device comprising a rotating part, of a projection upon said rotating part, a suitablysupported lever fulcrumed between its ends and having one end projecting beneath said projection, a spring causing said end of the lever to yieldingly maintain a position to be borne upon by said projection, a resilient arm adjustably connected to and projecting from the opposite end of said lever and adapted to bear upon the periphery of the design-disk when saidleverisdepressedbysaidprojection.

S. In a chromatrope, the combination with view-presenting means and actuating mechanism therefor of a tilting frame supporting said view -presenting means and operating mechanism, said tilting frame being of i U form, a rigid support of U form straddling saidtilting frame and having the ends of its legs pivotally connected to the ends of the legs of said tilting frame, and a set-screw adapted to secure said tilting frame in any angular position to which it'may be adj usted.

9. Ina chromatrope,the combination with a design-disk, a view-disk, means for rotating said disks and a support for said disks, of means for adjusting said support to different angles, means for rigidly retaining said sup? port at the angle to which it isl adjusted, a device for varying the view presented, and a signal device adapted to announce each change of View, for the purposeset forth.

iO. In a chromatrope, the combination with view-presenting means and means for varying the view presented including a moving part, of a signal device adapted to announce each change of view consisting of anelectric circuit, a/contact-terminal carried by said moving/part, a second contact-terminal supported adjacent to said first-mentioned contact-terminal, the terminals of said electric circuit being connected to said contacts t0 cause the circuit to -close upon each movement of said moving part past a predetermined point, an annunciator and a currentgenerator included in said circuit.

11. In a chromatrope, the combination with view-presenting means, a supporting-frame, and a device for varying the viewT presented consisting of a retarding device, a cog-wheel, means for rotating said cog-wheel intermittently, and an operative connection between said cog-wheel and said retarding device, of

a friction device adapted to act upon said cogwheel and consisting of a spindle supporting said cog-wheel and projecting into a boring in the supporting-frame and having a crosspiece at its outer end, an expansile helical spring-bearing between said cog-wheel and said cross-piece and a set-screw retaining said spindle 'against displacement for the purpose set forth.

l2. In a chromatrope, the combination with view-presenting means, a supporting-frame, and a device for varying the view presented consisting of a retarding device, a cog-wheel, means for rotating said cog-wheel intermittently, and an operative connection between said cog-wheel and said retarding device, of a friction device adapted to act upon said cogwheel and means for varying the friction of said friction device, for the purpose set forth.

In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE wELiis.

Witnesses z FRED J. SEARS, ARTHUR H. Evans. 

